Mac OS X: Some Key Commands May Not Work with KVM Switchbox

Holding down special key combinations at startup, or pressing certain special keys (like the Eject key) do not work when the keyboard is connected to the computer through a KVM switchbox.

Solution

Connect the keyboard directly to a USB port on the computer.

Some or all of the following startup key commands may not work, depending on the model of KVM switchbox:

• C (start up from CD)
• Option (start up to Startup Manager)
• Command-Option-P-R (reset parameter memory--PRAM)
• Command-Option-O-F (start up into Open Firmware)

In some cases, using a KVM switchbox may cause the computer to start up into a default 800-by 600- pixel resolution.